stinks

Looking to purchase an xh diff to put into my xe van. Mainly looking to upgrade to a 28 spline diff as the van is running a turbo barra now. I've found a diff out of an xh, I believe the ratio is 3.45 lsd. Just unsure of how you can id if its a 28 spline without pulling an axle and counting the splines. The diff has this sticker on it does that give any further info? Thanks in advance.